Emails Rejected for Azure Disabled Accounts

Created by Yves Lacombe, Modified on Fri, 24 Mar 2023 at 02:29 PM by Yves Lacombe


A former employees Proofpoint account status is disabled, but Proofpoint still processes and passes mail on to the mail server. How to enable/disable user in Azure and Proofpoint? 

Why are mail emails being rejected for not-Active Accounts / Disabled Accounts in Azure. 


Proofpoint is honoring the Not Active/Active flag within Azure. See below for instructions on how to enable mailflow for Block Sign-In set accounts in Office 365.

Accounts in Proofpoint that are active or enabled are considered licensed and is being billed. A disable or inactive user is not using a license, so it is not being billed and there is NO email flow for disable accounts


Why Are My Emails Being Rejected For Non-Active In Proofpoint/Disabled Accounts In Azure ?

There has been a change in the behavior of Proofpoint Essentials, where we are now honoring the Disabled flag given by Azure. 

Accounts that are Block Sign-In in Azure from logon, will be replicated and Not Active in Proofpoint. This will also prevent mail-flow to that address. 

To access the Block Sign-In setting within Office 365:

  1. Open Exchange Admin Center. 
  2. Navigate to Active Users and search for the mailbox.
  3. Click on the address.
  4. Block Sign-In can be seen.


  • If you are experiencing mail flow issues to accounts, check if the Block Sign-In setting is set to Disabled or Active. Active will need to be set to allow mail flow. 
  • If set to Block Sign-In , the account in Proofpoint will be honored and set to Not Active

How To Enable Mailflow For Block Sign-In Set Accounts In Office 365:

Within Proofpoint:

  1. Navigate to User Management > Users.
  2. Set the account from Not Active to Active by selecting Activate User.


  1. Navigate to User Management > Import & Sync > Azure Directory Sync
  2. Click Save & Run Sync Now.
  3. Under Adding/Updating, click Exempt From Sync on the right side of the window.


  1. Click Sync Active Directory.

This prevents future syncs from converting the A